Combined mixer and sifter



(No Model.)

D. PETERS.

COMBINED MIXER AND SIPTER.

PatentedJune 2, 1885.

INVENTOR 6212M WITNESSES ATTORNEYS lfnrrnn ST TES A'r- NI 'rrIcE,

DANIEL rnrnns, CINCINNATI, OHIO.

- COMBINED MIXjERAND sir-Tea.

SPECIFICATION forming part of Letters-Patent No. 319,311, dated June 2,188 5.

Application filed November 14, 1884. (No model T0 aZZ whom it mayconcern:

Be it known that I, DANIEL PETERS, a citizen of the United States,residing at Cincinnati, Ohio, have invented new and useful Improvementsin Combined Mixers and Sifters, of-which the following is aspecification.

My invention relates to combined mixers and sifters; and it consists inthe combined mechanism hereinafter more fully described, and pointed outin the claims.

Mechanism illustrating my invention is shown in the accompanyingdrawings, in which- Figure 1 is a side elevation of a complete machine,the mixing-vessel being in section to show the interior. Fig. 2 is across-section of hopper and sifting mechanism. Fig. 3 is a perspectiveview of sieve and frame, and Fig. 4 a perspective view of agitatordevice.

In order to give a full, clear, and exact de scription of my invention,I will proceed to describe, first, the hopper and its sifting.mechanism; second, the mixing-vessel and its f mixing mechanism; third,the action of both I singly or in combination, reference being made tothe drawings, where similar letters of ref erence designate the partshereinafter mentioned.

In the drawings, H is the hopper, mounted above and at one end of themixingvessel, and carrying mounted in bearings in its sides a shaft, 8,with spur-wheel s thereon exteriorly. I may provide a crank, c, foroperation by hand-power, or suitable means for connection with otherpower.

Upon the shaft within the hopper and in proximity to its sides Ifastenend plates, 6, and secure between them one or more agitator frames, f,by means of the screws c through the slotted openings in the end plates.

I form upon base-strips a brushes 5 of bristles, wire, or othersubstance, and detachably secure the strips to the agitator-frame. Asthe brushes wear by contact with the sieve, they may be set out fartherfrom the shaft by loosening the screws i in the slot and retighteningthem in a new position. Should the brushes finally require completerenewal, the base-strips may be detached and new ones, with brushes,inserted and screwed or other wise fastened to the frames. To secure theframes from lateral movement I insert Wedgepieces d.-- Thus constructed,the brushes of the agitator revolve on the shaft in contact with thesemi-cylindric sieve. The latter 1s fixed in a frame, F, adapted to beremovably inserted beneath the hopper, and fastened therein by pins,screws, or otherwise.

Frames having netting with different mesh may be used to suit the needsof the case.

at 72/, for convenience in inserting the screenframes. I also hinge theupper and lower parts at h, constructing the upper part with front andback contracted toward the jointline, and flaring outward below toassist the passage of sifted material into the mixlngvessel below. Thisconstruction permits easy access to the interior of the hopperto removethe agitator or to clean and examine the sieves.

' When in use, the upper and lower parts are secured together withcatch-hook 7t.

' In operation the agitator-arms push a quantity of material forward anddown upon the sieve, the spaces between the successive arms serving toconfine a charge which is rubbed and forced through the sieve by thefollowing brushes. The lumps and cakes are thus broken up andpulverized, while harder portions of dirt or refuse are carried around,and at the end may be removed from the sieve.

The brushes also serve to keep the meshes of the sieve cleaned andready-for the sifting of the following POWdBIZY The mixing-vessel is anoblong box, B, carrying mounted in its ends a shaft, S, adapted end, orby spur-gear s,meshing with the spurwheel on the hopper. I may also usethe crank c on this shaft to apply hand-power. I preferably form thelower part of the box below the shaft-line interiorly of asemi-cylindric surface, but I may construct the vessel itself acylinder.

I fasten rigidly to the shaft S by suitable arms, a, one or more spiralblades, 25 in the form of an Archimedean screw, adapted to pass inproximity to the curved surface of the mixing-vessel upon rotating theshaft. Intermediate of these and the shaft I fasten rigidly one or moresimilar blades, 0, but whose turns are in the opposite direction.

I hinge the hopper at the back, as shown 7 to be driven by power at thepulley P at one At the end of the n1ixing-vessel, at the bot tom, I forman opening closed by slide G or other suitable means.

In operation, upon rotating the shaft, the outer blades of the screwdevice carry the material inone direction from end to end, while at thesame time the inner blade or blades carry, it in the opposite direction.Gravity assists the operation, and there is a complete turning over andmixing of the material.

When the operation has proceeded sufficiently,

on opening the slide the pulverulent contents will be successively urgedtoward that endby the outer screw-blades (rotating toward the observerin the drawing) and completely emitted.

Ihave. thus far described the sifting and mixing mechanism asoperatingindcpendently; butv should it be desired to operate themsimultaneously I can lower the front of the hopper and bring the gears sand 8 into operative contact by turning toward the observcr about itshinges 0 0 a strip, 1, fastened either on the hopper or mixing-vessel.Fig. 1 shows the wheels out of gear, and Fig. 2shows the hopper loweredto bring the wheels into mesh. In the latter case, to secure properworking I hook or fasten the hopper to the side of themixing-vessel,providing the recess 1 in the reversible strip for passageof the hook 7.6. In the latter case, also, should it be desired tooperate by steam-power the pulley P will operate both sifter and mixer;or the crank 0 may be attached to either shaft to operate the mechanismof both.

The general construction of hopper and mixing-vessel is sufficientlyclear in the drawlugs, and I have therefore not described themespecially adapted for pulverulentsubstances v I' do not intend to limitmy mixing apparatus to such application.

The same mixing apparatus may be used where the substance is in a pastyor semiliquid condition, as fats, lard, or pulps.

I am aware that sifters for flour'are common employing wire-gauzenetting of semicylindric form, and I am also aware that spiral bladesfixed to a cylinder or rotating therein are used in machines for variouspurposes. Such construction broadly, therefore, I do not Claim. v

. What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In a combined mixerand sifter, the combination of a horizontal casingprovided with a sifter at the top near one end, and a discharge-apertureat the bottom near the other end, to emit the mixed contents, aprojecting eonnections between the mixer-shaft and the I sifter, wherebythe two are operated in unison, substantially as set forth.

3. In a combined mixer and sifter, a sifter adj ustably mounted at thereceiving end of the mixer and power connections between the two,whereby the latter may be thrown into or out of operating connection,substantially as set forth. I

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses. I 1

DANIEL PETERS.

Witnesses:

B. M. HOSEA,

L. M. HOSEA.

